Billy Boat Performance Cat-Back Exhaust System – 2.5″ Fully Polished

Billy Boats’s A4 Exhaust is a complete stainless steel mandrel bent cat-back exhaust. On an A4 the catalytic converter is bolted to the turbocharger and then the exhaust begins with the downpipe. Unlike most other aftermarket exhausts the BB exhaust includes a 2.5″ downpipe.

The exhaust then continues back to the innovative center muffler where it splits into dual 2.25″ pipes. Each of these mandrel bent pipes goes to its own muffler with a 3.5″ rolled round tip. This exhaust is very quiet and simply changes the tone of the exhaust to a deep unobtrusive sound. With TIG welding fully stainless construction and CNC’d hangers you will not find a higher quality system on the market.

All BB exhausts come with a full lifetime warranty.

Now that you have a new exhaust system, why not improve your air flow elsewhere? Cold Air Intakes are a great way to add some extra power to your vehicle. Check under the Engine section for all your performance part needs.